The class is designed to help students "become more purposeful givers and engage more effectively with nonprofit organizations in their communities."

To help them reach that goal, those registered will be able to nominate U.S. nonprofits and then help decide which ones will receive part of the more than $100,000 in grants that Doris Buffett's foundation will award at the end of the course.

In a video for last year's course, Buffett said he's the "wholesaler" and Doris is the "retailer" when it comes to charity.